Các bộ lọc không khí được chế tạo bằng sợi lyocell xơ và sợi polyethylene terephthalate với sự cấy ghép của nano xơ cellulose để loại bỏ hạt hiệu quả cao

Springer Science and Business Media LLC - Tập 30 - Trang 6471-6486 - 2023
Jiawei Zhang1, Xiaojun Wang2, Huicheng Huang1, Bin Zhang1, Hao Zhou1, Yujun Xin1, Guangting Han1,2, Yuanming Zhang2
1College of Textiles & Clothing, Qingdao University, Qingdao, People’s Republic of China
2State Key Laboratory of Bio-Fibres and Eco-Textiles, Qingdao University, Qingdao, People’s Republic of China

Tóm tắt

Ô nhiễm không khí đã trở thành một mối đe dọa nghiêm trọng đối với sức khỏe con người; do đó, việc phát triển những bộ lọc không khí hiệu suất cao là rất cần thiết. Trong bài báo này, các bộ lọc không khí có cấu trúc bậc thang được cấy ghép nano xơ cellulose (CNF) và bao gồm các hợp chất LC/PET/CNF đã được chuẩn bị bằng phương pháp lọc có áp suất. Khung của hợp chất được làm bằng sợi lyocell xơ (LC), trong khi các sợi polyethylene terephthalate (PET) đóng vai trò như là khoảng cách giữa các sợi LC xơ fibrillated. CNF, đóng vai trò như phụ gia chức năng, đã được cấy ghép vào hợp chất LC/PET để giảm thiểu áp suất rơi. Kết quả cho thấy hiệu suất lọc tổng thể của hợp chất LC/PET (50%:50%) với trọng lượng cơ bản 30 g/m2 đối với vật chất hạt (PM) chỉ đạt 52,69%, trong khi áp suất rơi là 56,50 Pa. Tuy nhiên, sau khi cấy ghép CNF vào hợp chất LC/PET với nồng độ trọng lượng chỉ 0,5 g/m2, hiệu suất lọc tổng thể đã cải thiện đáng kể lên 98,22% với áp suất rơi chấp nhận được là 145,50 Pa (P50W30t3N0.5). Nghiên cứu này cung cấp một phương pháp mới để chế tạo bộ lọc không khí hiệu suất cao với hiệu quả cao trong việc loại bỏ PM.

Từ khóa

#ô nhiễm không khí #bộ lọc không khí #cellulose nanofibrils #hiệu suất lọc #hạt vật chất

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